On 27/07/2021 06:51, Bjorn via wsjt-devel wrote:
Hello
Maybe this is a known issue. But anyway: I have 10 VAC channels going
here and I use 1 and 2 towards the WSJT-X software.
When I start the WSJT-X I get RX on ch1 and TX on Ch2. But after it
has been running for sometime, say RXing for a day. And I then hit TX
it uses Ch6 for some reason.
Restart WSJT-X fixes it.
I have used 2.4.0 and 2.5.3 RC3, same thing.
73 de SM7SJR
Hi Bjorn,
WSJT-X saves audio device names in its settings file but to access the
devices we look them up and get an index number which we must use to
interact with them. These index numbers are somewhat volatile and can
change while WSJT-X is running if other audio devices on the system
appear or disappear. It is too costly to look up the audio device index
every time we need to start a transmission, e.g. on some platforms it
takes several seconds to complete enumeration of the audio devices, so
we are vulnerable to the devices that the index numbers reference
changing without our knowledge.
We recommend that while using WSJT-X all system power options, that
might disable a device carrying audio are disabled. This should include
all USB hubs, and HDMI monitors.
73
Bill
G4WJS.
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